This is between following a loose 'standard' (as the RFC in question is an after
the fact description), and providing some more accounting information.
Some of the other filters require this information for proper operation, and I
can't really zap it.
Might I suggest a thin shell wrapper to eat those options? Such a program will
probably be necessary to use netatalk with the LPRng system that rides with Red
Hat Linux 7, as it provides files, rather than stdin spools.